This is one I forget as you don’t have to use this form that often but when setting up new Sales tax settlement periods the “New period” button is placed at the top of the form and it’s easy to miss it.

Click on the New Period button to add a new period in the pattern to avoid having to type in or pick the dates.

Cheers

Lachlan

PS. This screen shot was from AX2012R3 but same for all the AX2012 series.